The US playing card company ‘Bicycle’ had manufactured a playing card in WW2. That, when the card was soaked, it would reveal an escape route for POWs. These cards were Christmas presents for all POWs in Germany.
Amazing and Unbelievable Facts
The US playing card company ‘Bicycle’ had manufactured a playing card in WW2. That, when the card was soaked, it would reveal an escape route for POWs. These cards were Christmas presents for all POWs in Germany.